Grace Thomas wrote: ↑19 Apr 2020, 13:47
When using questionnaires in the project, how accurate are these questionnaires to analyse the resulting data? And also Is it better to use a yes or no questionnaire or a scoring questionnaire?
Hi Grace,
I request you to go through the questionnaire #3992
By checking the validity and reliability of a questionnaire, you will understand how accurate to use that questionnaire for the specific study.
The use of closed ended (Yes/No) or open scoring questionnaire purely depends on the outcome which you want to measure.
I will give an Example (hypothetical):
If you want to know the risk factors for COPD and you planned to collect only the factors, you can go for Yes or No: Like Smoking (Yes/No); Cough (Yes/No); Asthma (yes/No); History (Yes/No)
Whereas, you want to study the extend of smoking and risk of COPD, need to use scale: Like How many cigarettes per day (1 to 10); How many packets per day (1 to 5); How often (Rare, occasionally, always)
Otherwise you want to check the pain or quality of life etc., always you need to use scoring questionnaire.
Depends on the study question and outcome.
Hope you are clear with the concept
